284 



KRI[)TJOF NANSKN, 



M.-N. Kl. 



"riie cause f)f these irreal niimis flei)artiires of ihe heij^lits of the 

 'J'apes-I -ilturiiia lc\cl iii southern Swcleti aiul in norllicni jutlaii'I niay 

 probably be that tlie latej^Hacial anrl post-glacial crustal movcuieiits have 

 been more complicatefl in these re^'ions than they j)robably were along 

 the west ami n<»rlh ci.asi of l'"enno-Scanflia. iJurinj^ the Ancylus pcrio<i 

 these coasts were ui>lieavefl partly e\cn to a hij^her level than they have 

 at present, 'i'lieii they a^^ain sank to their maximum submergence before 

 or durini^- the 'J'apes-Litt(jrina period, after which time they have again 

 risen. 



It has tri be rememljerer], liowever, tliat the determinations of the 

 levels of "the upper marine limit" as well as of the Tapcs-I-ittorina 

 sul)nier,i;ence are always difficult and more or less uncertain, where they 

 cannot be based (/u clirect measurements of raised shore-lines cut in solid 

 rock, ff, for instance, they are based on marine deposits, it may often 

 be (kubtful at what dc|)th below the surface of the sea they were de- 

 posited, (îvc. T.t is, therefore, easy to understand tliat in the course of 

 time the heights given l)y the various investigators for the Tapes- 

 Littorina k'vel have differed a great deal. 



Nevertheless, there seems to be a certain regular system in the 

 distribution of the positive and negative departures of the heights of 

 the Tapes-T.ittorina level found in Sweden and Denmark, wdiich may 

 indicate that these differences are real, and that the process of upheaval 

 of these regions has differed from that of the west anrl north coasts of 

 Fenno-Scandia. 



In this connection I may mention an apparent anomaly which A. G. 

 Högbom thinks [1920] to have occurred in the upheaval of Finland and 

 eastern Sweden after the Stone Age. He points out that the height 

 which the land has risen after the time of the characteristic Stone Age 

 culture, generali}' called the Aloppe culture, differs a great deal in relation 

 to the total upheaval after the Littorina period in the various regions. 

 He gives the following tal)le: 



' The heights of the Littorina level have been reduced at these two places according 

 to Ramsay's latest map of the Littorina isobases of southern Finland [1920, p. 257]. 



